let today = new Date();
    let date = today.getDate();
    let temp = new Date();
    temp.setDate(date -1);
    let yesterday = new Date(temp);
    temp = new Date();
    temp.setDate(date + 1);
    let tomorrow = new Date(temp);
    let week =[{
      title:'昨天',
      strShortDate: (yesterday.getMonth()+1) + '/' + yesterday.getDate(),
      strDate:yesterday.toLocaleDateString(),
      taskStatus:''
    },{
      title:'今天',
      strShortDate: (today.getMonth()+1) + '/' + today.getDate(),
      strDate:today.toLocaleDateString(),
      taskStatus:''
    },{
      title:'明天',
      strShortDate: (tomorrow.getMonth()+1) + '/' + tomorrow.getDate(),
      strDate:tomorrow.toLocaleDateString(),
      taskStatus:''
    }];

    {week.map((day,idx)=>(
        <TouchableHighlight  key={idx} onPress={(day) => this.onDatePress(day)}>
          <View>
            <Text>{day.title}</Text>
          </View>
        </TouchableHighlight>
      ))}